Leading up to the 2020 election, South Carolina Lede is keeping you up to speed on what the candidates are saying on the campaign trail in the Palmetto State with these "Trail Bites" mini-episodes. On this edition for the week of March 21, 2019, host Gavin Jackson takes you to recent campaign stops by Democractic presidential candidate Sen. Bernie Sanders (I-VT.).

Acting Defense Secretary Patrick Shanahan is under investigation by the Pentagon's Office of Inspector General because of allegations he improperly advocated on behalf of his former employer, Boeing Co.

"I said, 'Let's do a hashtag and let the world know what we do," he says. "Young Nigerians are very determined to succeed. What we hear about young Nigerian people is that we are lazy. But we are hardworking. We want to make it."

The "bomb cyclone" that swept through the Midwest this week has caused more than $1 billion of flood damage in Nebraska, the state's governor said Wednesday. At least three people have been killed in Nebraska and Iowa.

Venezuelan opposition leader Juan Guaidó said Thursday that government agents detained his chief of staff, Roberto Marrero, in an overnight raid. Describing what he called a kidnapping, Guaidó said weapons had been planted at Marrero's house and that he should be freed immediately.

The raid took place around 2 a.m. local time, Guaidó said, adding that he does not know Marrero's current whereabouts — and saying his chief of staff had denounced any knowledge of two rifles and a grenade that he says authorities allegedly found in his home.

Martini glasses emblazoned with the words "Mommy Juice." Hundreds of people lined up in the bitter cold for a Christmas-themed bar. Cocktails, including one at $8,500 a pop, made with vintage liqueurs.

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From the BBC World Service… Despite an effort from Prime Minister Theresa May last night to reassure the British public and the country’s businesses about Brexit, firms are still worried about what happens next Friday when the clock strike midnight. We'll hear from businesses on both sides of the English channel about how they’re preparing in an increasingly uncertain environment. Then, Chinese president Xi Jinping is in Italy today – a country expected to become the first G-7 nation to officially endorse China's global Belt and Road Initiative.

Marketplace Tech is taking a look this week at how people get radicalized online. They may start out as trolls making tasteless jokes, get sucked deeper into increasingly radical communities and maybe take the step to commit violence in the real world, like the Christchurch shooter in New Zealand. What can the biggest social media platforms in the world do to interrupt this process? Host Molly Wood talked with Dipayan Ghosh, who used to work on global privacy and public policy issues at Facebook.

What can the biggest social media platforms in the world do to radicalization online? Host Molly Wood talked with Dipayan Ghosh, who used to work on global privacy and public policy issues at Facebook. Now he's a researcher at the Harvard Kennedy School. He says, yes, it's hard for big platforms to minimize that content. But he says it's also not that hard.

It's no secret that nearly all of Facebook's revenue comes from advertising. But did you know Facebook is accused of allowing advertisers to discriminate against minorities, women and other protected groups? In some cases, civil rights groups say, Facebook made it possible for housing, job and credit advertisements to post to the feeds of white people or men exclusively — a violation of decades-old equal opportunity laws.